Markel Corporation
Ownership
Ownership Structure
Who owns Markel Corporation (MKL)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 97.3% of the shares are freely tradable; institutional investors hold 81.6%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 5.63 | 697,836 | -1.8 | 06/30/2026 |
| Vanguard Capital Management, LLC | 4.40 | 545,650 | +0.2 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 4.21 | 521,976 | -0.4 | 06/30/2026 |
| Davis Selected Advisers | 3.28 | 406,759 | +6.1 | 06/30/2026 |
| Morgan Stanley - Brokerage Accounts | 2.83 | 350,660 | -1.8 | 06/30/2026 |
| Select Equity Group LP | 2.68 | 331,679 | -12.2 | 06/30/2026 |
| State Street Corp | 2.52 | 312,169 | +1.7 | 06/30/2026 |
| Principal Financial Group Inc | 2.48 | 307,791 | -23.4 | 06/30/2026 |
| Boston Partners Global Investors, Inc | 2.48 | 307,500 | +22.5 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 3.01 | 372,917 | -1.3 | 09/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Markel Group Inc. | 10% Owner | 10,944,411 | 20,463,859,688 $ | Sep 11, 2026 | direct |
| Crowley Andrew G. | EVP & Pres., Markel Ventures | 2,749 | 5,139,431 $ | Jul 15, 2026 | direct |
| Costanzo Brian J. | Chief Financial Officer | 1,634 | 3,055,815 $ | Sep 30, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 30, 2026 | Costanzo Brian J. | Chief Financial Officer | Other | 2 | 1,455.58 | 2,911 |
| Sep 11, 2026 | Markel Group Inc. | 10% Owner | Other | 7,836,411 | – | – |
| Jul 15, 2026 | Crowley Andrew G. | EVP & Pres., Markel Ventures | Other | 7 | 1,730.49 | 12,113 |
| Jun 30, 2026 | Crowley Andrew G. | EVP & Pres., Markel Ventures | Other | 3 | 1,617.19 | 4,852 |
| Jun 30, 2026 | Costanzo Brian J. | Chief Financial Officer | Other | 2 | 1,617.19 | 3,234 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: October 30, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.